Square D HJA36070UK 70A 3-Pole 600 V Circuit Breaker

Square D HJA36070UK 70A 3-Pole 600 V Circuit Breaker is a purpose-built protective device tailored for modern 3-phase electrical systems. With a 70 amp current rating and a 3-pole configuration, it provides reliable, synchronized protection across all phases in demanding industrial and commercial installs, while safely handling systems up to 600 volts.

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HJA36070UK

This model is specifically designed for Square D installations, offering precise compatibility within Square D panels and related accessories. The 3-pole design ensures all three phases trip together, reducing the risk of phase imbalances and providing robust protection for three-phase loads in your distribution network.

Key use cases

• Three-phase distribution boards in industrial facilities and commercial buildings.
• Protection for equipment and circuits operating at up to 600 V within 70 A branch protections.
• Spare or replacement part for existing Square D systems to maintain consistent protection and performance.

Why this model stands out

• Dedicated three-pole architecture that automatically disconnects all phases for comprehensive fault clearing, enhancing safety and system integrity.
• Exact part fit for Square D panels with the HJA36070UK designation, ensuring reliable compatibility and straightforward replacement.
• Clear alignment with typical three-phase electrical layouts, making it a practical choice for upgrading or standardizing protection across a 600 V network.

Practical tips for use

• Match the circuit’s amperage requirement with the 70 A rating to ensure proper overcurrent protection without nuisance trips.
• Verify system voltage and phase configuration to confirm three-phase suitability before installation.
• Keep the part number HJA36070UK on hand when ordering replacements or conducting panel maintenance for seamless cross-compatibility with Square D equipment.